Skip to content

Instantly share code, notes, and snippets.

@VAnsimov
Last active December 27, 2024 16:56
Show Gist options
  • Save VAnsimov/3d30fc02780c4d6fcea4ba425084ae2c to your computer and use it in GitHub Desktop.
Save VAnsimov/3d30fc02780c4d6fcea4ba425084ae2c to your computer and use it in GitHub Desktop.
SwiftUI View to UIView
import UIKit
import SwiftUI
// SwiftUI
struct SomeView: View {
var body: some View {
Text("Hello World!")
}
}
// UIKit
class RootViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// SwiftUI View -> UIView
let swiftUIView = SomeView()
let uiKitView = HostingView(rootView: swiftUIView)
view.addSubview(uiKitView)
// Without this, there may be problems with safeArea in SwiftUI View
uiKitView.addChildControllerTo(self)
}
}
/// HostingView allows you to use SwiftUI View in UIKit code
///
/// Warning:
/// iPhone models without SafeArea may experience extra ridges.
/// There are two ways to solve the problem: either call
/// the HostinView method hostingView.addChildControllerTo(self)
/// or use the .ignoresSafeArea() method in SwiftUI View.
public final class HostingView<T: View>: UIView {
private(set) var hostingController: UIHostingController<T>
public var rootView: T {
get { hostingController.rootView }
set { hostingController.rootView = newValue }
}
public init(rootView: T, frame: CGRect = .zero) {
hostingController = UIHostingController(rootView: rootView)
super.init(frame: frame)
backgroundColor = .clear
hostingController.view.backgroundColor = backgroundColor
hostingController.view.frame = self.bounds
hostingController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
addSubview(hostingController.view)
}
public required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
public func addChildControllerTo(_ controller: UIViewController) {
controller.addChild(hostingController)
hostingController.didMove(toParent: controller)
}
public func removeChildControllerTo(_ controller: UIViewController) {
hostingController.willMove(toParent: nil)
hostingController.removeFromParent()
}
}
@VAnsimov
Copy link
Author

This solution has performed well over time, I'm supplemented it with nuances I've discovered.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment